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Hack Notes CVA 091222
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=Hack Notes 2009-12-22= ==Belt?== V1.5 limit to just 8 motors for simplification purposes. For a belt mod, reserve some V1.0 boards and instruct people to add diodes - deals with inventory problem. ==NP V1.5== *Settle on new parts New parts for LiPo battery upgrade mod: battery: sparkfun PRT-00341 charging IC: newark 59J2761 USB Mini B jack: digikey 670-1190-1-ND JST jack: digikey 455-1719-ND *Mounting acrylic - how many screws? **Make a mock-up **Border pieces - later cut tongue and grooves for snappage ***Ask Rachel for feasability **Hold the boards in with notches (+$20 for more than 6pts board shape) = no holes! *No atmel socket - it's tall enough and people can figure that out *Investigated brownout detection, not useful ==TODO / INVESTIGATE== *Bigger cap to make the voltage drop less meaning the atmega won't reset when motors ramp up on low batteries *Switch to internal oscilator for simplicity and power saving, timing vars need retweaking??? *Find/make through-hole usb mini eagle part ==DONE== *Add copyright info to code and old eagle files *Batt charging cap not spec'd yet, just copied the 0.1uF part *Put in RGB LED red=charging green=on
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